Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mark N Fiengo, DO

Cardiovascular Disease Physician in Waterford, CT · enumerated 2005.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1245214220

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Mark N Fiengo

Credential DO

Sex Male

Practice address 196 Parkway S, Suite 103, Waterford, CT, 06385

Phone (860) 443-4383

Fax (860) 443-3980

Enumeration date Dec 2, 2005

Last updated in NPPES Mar 10, 2020

Taxonomy & licenses

207RI0011X Interventional Cardiology Physician Allopathic & Osteopathic Physicians · License 00281 (CT) Secondary

207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License 000281 (CT) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier	Type	State	Issuer
001002815	Medicaid	CT	-

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

How do I verify Mark Fiengo's NPI record?

Cross-check NPI 1245214220 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1245214220 active?

Yes, as of the latest NPPES snapshot, NPI 1245214220 is active (record last updated 2020-03-10).

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-03-10.